I'm trying to crawl a site under a different IP address. Is there a way to mask your IP on an Apache server?
not really, you need to give the server your ip address so it knows how to send the data back to you. Your only option might be to use a proxy server, then the proxy server's ip will show, but that'd be alot of extra work for you.
You could send an x-forwarded-for header to make it look like it's a proxy request, probably not a good idea, & is somthing that may get you into trouble though.